Lever-adjusting harrow



(No Model.)

W. E. SMITH. LEVER ADJUSTING HARROW.

Patented July 3, 1894.

m: upnms PErERs co, PHOYO-UYHQ, WASHINGTON. u. c.

UNITED STATES -PATENT OFFICE.

WILLIAM E. SMITH, OF vI/VATKINS, NEW YORK, ASSIGNOR OF ONE'IIALF TOMERCER B. TATE, OF HARRISBURG, PENNSYLVANIA.

LEVER-ADJUSTING HARROW.

SPECIFICATION forming part of Letters iatent No. 522,434, dated July3,1894. Application filed March 25, 1892. Renewed anuary 18, 1894.Serial No. 497,331. (No model.)

particularly to that class of harrows which are provided with springteeth attached to a sultable frame,.and which are provided also wlthlever adjustments whereby the relations of the teeth to the frame may bevaried.

It has for its object to improve and simplify the construction of suchharrows,.and to prov 1de a cheap and effective device, that is notllable to get out of order.

Referring to the accompanying drawings: Flgure 1, is a perspective viewof a harrow embodying my invention. Fig. 2, is a longitudinal verticalsection. Fig. 3, is an enlarged detail View. showing the preferredmanner of attaching the teeth to the transverse rods.

The harrow is shown as composed of two parts or sections A, B, hingedtogether as at O, and each part consists of a frame made up of flat orangle pieces of metal bolted or riveted together. Thus I have shown eachpart as having three longitudinal pieces D attached to three transversepieces E, but of course it will be understood that any number of piecesmay be used according to the size and dimensions of the harrow. It willfurther be observed that I have shown each part of the harrow as beingrectangular in shape, and while this is the preferred form, itisjevident that it may be in any other'form. Thus the exterior sidepieces may be placed at an angle converging toward the center so thatthe harrow is practically a V-shape, or the outside pieces may be curvedor other form. The front of each section of the ,harrow is provided witha guard piece F, which protects the harrow, and this may be a separatepiece of metal, or the sides may be extended and bent to form thisguard; Mounted on this framework are the cylindrical bars G, and thesemay be either solid or hollow, and are shown as supported in collars orbearing pieces I-l, secured to the frame at their outsides, whileintermediate this frame are shown yoke pieces I, forming bearings orsupportsand the end of the spring, and this is secured to the bar bysuitable bolts or rivets 70. In this way I find that the spring teethcan be securely attached to the bars, and that they can be readilyremoved or adjusted, by simply loosening the clip.

In order that the frame may be elevated or lowered with relation to thebearing pointsofthe teeth, I attach to each rod G, an arm .L whichextends upward, and is connected to a cross arm M. This cross arm isalso connected to a lever N, which is loosely pivoted on one of the barsG, as. at 0. By this construction it will be seen that by moving thelever, the bars can be rotated, so as to change the relations of theplane of the frame with the plane of the teeth. In order to secure thelever and maintain these relations, I provide a yoke piece P, which isshown as mounted upon two of the transverse bars, and as having a seriesof openings for the reception of a suitable pin Q, or may be securedwith a spring latch connected with the lever "and slots or teeth out inthe circle for holding the same, by means of which the lever may besecured in the proper position.

With this construction it will be seen that the harrow can be cheaplyand simply made, ordinary bar or merchantable iron or'steel being used,requiring no special manipulation, and when constructed, it forms anefficient harrow capable of adjustment in use,

and well adapted for the purposes for which rods intermediate thesockets, and spring teeth secured to said rods, substantially asdescribed.

2. In a harrow thecombination with the metallic frame, the transverserods, the sockets, the yokes, the spring teeth secured to the rods, theclips for holding the teeth, the arms also secured to the rods, and thelever and connections for adjusting the teeth with relatron to theframe, substantially as described.

3. A barrow, the frame of which is composed of flat metal plates securedtogether forming two sections which are hinged each to the other,transverse rods supported on each section, and carrying the springteeth, clips securing the teeth to the transverse rods, and a guardpiece connected to the front of each section of the frame, substantiallyas described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

VILLIAM E. SMITH.

Witnesses:

J. O. KLEIBER, W. P. NOLAN.

